Holder



FIG. 1 is a front/right/top perspective view of a holder;

FIG. 2 is a rear/left/bottom perspective view thereof;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a front elevational view thereof.

The broken lines depict portions (e.g., suction cups, front texture, inner wall, slots, etc.) that form no part of the claimed design. 

CLAIM I claim the ornamental design for a holder, as shown and described. 